Flour-bolt.



Patented Mar. [3, I900.

w. L. BURNER.

FLOU n BOLT.

(Application flied Feb. 2, 1899.)

(No Model.)

lllllllll/llllfllllllllllllllllllllllllllll/ll/l/l/(l/l/l/l/Q I UNITED STATES PATENT FFIQE.

WILLIAM L. BURNER, on COLUMBUS, OHIO, ASSIGNOR TO THE CASE MANUFACTURING COMPANY, OF SAME PLACE.

FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent No. 645,454, dated March 13, 1900. Application filed February 2, 1899. Serial No. 704,282. (No modeh) To ctZZ whom it may concern:

Be it known that I, WILLIAM L. BURNER, a citizen of the United States, and a resident of Columbus, in the county of Franklin and State of Ohio, have invented a new and useful Improvement in Flour-Bolts,of which the following is a specification.

My invention relates more particularly to the flat type of flour-bolts over which material to be bolted is caused to pass by imparting to the bolt a rotary, gyratory, eccentric, or'

other motion. When bolting or sifting flour 0r middlings on a fiat sieve, the flour or fine product under certain conditions adheres to larger particles or lumps together, with the result. that all of the fine product does not pass through the sieve over which the material is fed. My present invention seeks to obviate this difficulty by providing a boltingsieve with a disintegrating attachment secured to and moving bodily with the sieve, which extends into the bolting-sieve above the bolting-cloth and offers an obstruction or abutment for the lumps or particles of material as they are agitated by the motion of the seive, with the effect of breaking up or disintegrating the lumped fine particles or of dislodging the fine material or flour from the coarser particles which have not yet been reduced. The disintegrating attachment may assume a number of different forms, and, in fact, may .consist of any obstruction or abutment projecting into the sieve in such numbers as to insure suificient treatment of the entire body of material, but yet not interfering too much with the feeding of the material over the sieve-cloth.

For purposes of illustrating my invention I have herein shown two embodiments, one of which consists of a number of depending pins supported from and secured rigidly to the cover of the sieve and terminating a short distance above the sieve-cloth and preferably provided at their lower ends with a network of wires,which are embedded in the material as it is fed along, or I may employ a number of depending loop-shaped abutments crossed in pairs and arranged so as to effectively cover the area of the sieve-cloth and insure uniform treatment of the material passing thereover.

My invention will be fully understood upon reference to the accompanying drawings, in which-- Figure 1 is a bottom plan view of a portion of a sieve having my improved disintegrating attachment. Fig. 2 is a vertical longitudinal section thereof on the line 2 2, Fig. 1. Fig. 3 is a bottom plan View of a portion of a sieve having a modified form of my disintegrating attachment. Fig. 4 is a vertical longitudinal section thereof on the line 4 4, Fig. 3. Fig. 5 is a detail perspective view of my modified form of disintegrating attachment on a much larger scale.

a 1 represents the frame or body of a bolting= sieve provided with sieve-cloth 2.

3 represents a number of depending bars, pins,or abutments preferably supported from the closed top 4 of the sieve, moving'bodily with the sieve and extending down to within a short distance of the sieve-cloth 2 and there connected by a network of wires 5. It is to be understood that the sieve in operation is given a vibratory or' other shaking motion, so that the material will travel substantially in the direction indicated by the arrows in Fig.1. In so traveling the material strikes against the abutments 3 and the lumps of fine ma terial are disintegrated, while the material which in gradual reduction process has not yet been reduced simply has the fine material dislodged from it. Moreover, the cross-wires- 5, which are constantly embedded in the ma terial passing over the sieve,has the edect of further obstructing the passage of lumps and increasing the separation of the finer particles into a condition which permits them to pass through the sieve.

According to the form shown in Figs. 3, 4, and 5 a number of loop-shaped abutments 6 are secured to the top 4 of the sieve so as to move therewith by means of perforated attaching-ears 7 or by other suitable means and depending into the sieve in a position to obstruct the passage of lumps or larger particles and to produce the same effect as described with reference to Figs. 1 and 2. The abutments 6 are preferably arranged in pairs crossed substantially at right angles and distributed over the sieve-cloth in a manner which enables them to serve the double purpose of the abutments 3 and the network 5.

to the sieve-cloth, and moving bodily with the sieve and consisting of vertical parts which are arranged to depend into the material being treated and horizontal parts which are arranged so as tobe embedded in the said material; substantially as described.

2. A bolting-sieve having a sieve-cloth and comprising fixed depending abutments secured to the cover of the sieve, and a network secured to said abutments adjacent to the sieve-cloth; substantially as described.

XVILLIAM L. BURNER.

Witnesses:

C. N. SHOUGH, W. F. BILLINGSLEY. 

